public IGraph Get() { var g = (IGraph)_tripleStore.Query(@" CONSTRUCT { ?s ?p ?o } WHERE { GRAPH ?g { ?s ?p ?o } } "); return(g); }
internal object ExecuteQuery(IQuery spinQuery) { ExecuteUpdate(); ISparqlPrinter sparqlFactory = new BaseSparqlPrinter(this); if (_queryExecutionMode != QueryMode.UserQuerying && spinQuery is IConstruct) { ExecuteUpdate((IConstruct)spinQuery); return(null); // TODO is this correct or should we return the execution graph ? } SparqlParameterizedString commandText = sparqlFactory.GetCommandText(spinQuery); return(Storage.Query(commandText.ToString())); }
internal static SpinDatasetDescription Load(IUpdateableStorage storage, Uri datasetUri = null, IEnumerable <Uri> graphsUri = null) { SpinDatasetDescription dataset; if (datasetUri == null) { SparqlResultSet datasetDiscovery = (SparqlResultSet)storage.Query("SELECT ?dataset WHERE {?dataset a <" + SD.ClassDataset.Uri.ToString() + ">}"); int datasetCount = datasetDiscovery.Results.Count; if (datasetCount > 1) { throw new Exception("More than one dataset has been found in the current storage provider. Please specify which to use through the datasetUri parameter."); } else if (datasetCount == 1) { datasetUri = ((IUriNode)datasetDiscovery.Results.FirstOrDefault().Value("dataset")).Uri; } else { datasetUri = UriFactory.Create(RDFRuntime.DATASET_NS_URI + Guid.NewGuid().ToString()); } } dataset = new SpinDatasetDescription(datasetUri); storage.LoadGraph(dataset, datasetUri); dataset.BaseUri = datasetUri; Triple isUpdateControlledDataset = dataset.GetTriplesWithPredicate(RDFRuntime.PropertyUpdatesDataset).FirstOrDefault(); if (isUpdateControlledDataset != null) { dataset._sourceUri = ((IUriNode)isUpdateControlledDataset.Object).Uri; } else { dataset.Assert(RDFUtil.CreateUriNode(datasetUri), RDF.PropertyType, SD.ClassDataset); } return(dataset); }